Flora of North America species comparison

1(–6+), erect to ± procumbent, usually simple (usually with single stout leader, sometimes multiple with slender laterals), hispid proximally or throughout.

1–3, slender or stout, branched proximally (sparingly) or distally, glabrate to tomentulose.

basal and cauline; petiolate (petiole bases clasping);

blades lanceolate or oblanceolate, runcinate or lyrate, 5–30 × 1–4.5 cm, margins pinnately divided to sharply dentate (lobes remote, unequal), apices obtuse or acute, mucronate, faces glabrous or sparsely hispid (hairs yellow; proximal cauline auriculate and clasping).

basal and cauline; petiolate (petioles relatively broadly winged);

blades elliptic or oblanceolate, often runcinate, 7–28 × 0.5–7 cm, margins pinnately lobed to dentate (lobes remote, lanceolate to narrowly triangular, often recurved), apices attenuate, faces usually tomentulose to glabrate, sometimes glandular.

cylindric to turbinate, 5–8 × 3–6 mm.

cylindro-campanulate, 8–16 × 3–5 mm.

20–60;

corollas deep yellow (reddish abaxially), 8–12 mm (hairy).

5–10(–12);

corollas yellow, 15–20 mm.

8–16, lanceolate, 6–7 mm (margins scarious), apices acute, abaxial faces stipitate-glandular and glandular setose (setae black, usually in 2 rows), adaxial glabrous.

5(–10), (deep green or black) lanceolate, 10–16 mm, (bases becoming strongly keeled and swollen, often glabrous, margins yellowish, conspicuously and densely tomentulose), apices acute to strongly acuminate, abaxial faces densely tomentulose adaxial with fine hairs.

of 8, linear, tomentulose or stipitate-glandular bractlets 2–4 mm.

of 5–6, deltate to lanceolate, tomentulose bractlets 1.5–4 mm.

10–15(–30+), in corymbiform arrays.

7–10(–30), in corymbiform arrays.

brownish yellow, fusiform, 1.5–2.5 mm, apices narrowed (not beaked), ribs 10 (glabrous or scabrous);

pappi white (fluffy), 3–4 mm (scarcely surpassing phyllaries).

deep reddish brown, subcylindric, 5–8 mm, apices constricted, ribs 10 (prominent);

pappi yellowish white, 6–12 mm (bristles unequal).

= 6.

= 22, 33, 44, 55, 77, 88.